What is a drover?

A drover was somebody who drove herds of livestock over distances. We're not talking about a farmer driving sheep from one pasture to another; we're talking about cowboys driving cattle across entire states, usually to wind up in a stockyard someplace. You often hear phrases in cowboy movies like "well Marshall, there's a bunch o' drovers comin' in hear at the end o' the month, an' there could be trouble."